Teggart, F. J., & Bock, K. (1977). Theory and processes of history (Second pbk. edition.). University of California Press.

Teggart, Frederick J., and Kenneth Bock. Theory and Processes of History. Second pbk. edition. Berkeley: University of California Press, 1977.

Teggart, Frederick J., and Kenneth Bock. Theory and Processes of History. Second pbk. edition. University of California Press, 1977.